ASTROSAT CZTI

Data Quality Report

Orbit 10661

Creation date: 2024-06-27T16:02:07.666923
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A03_097T01_9000001540_10661cztM0_level2.evt modeM0/AS1A03_097T01_9000001540_10661cztM0_level2_quad_clean.evt
Size (bytes)560,157,12088,208,640
Size534.2 MB 84.1 MB
Events in quadrant A3,319,600555,592
Events in quadrant B4,592,000551,191
Events in quadrant C3,448,525551,535
Events in quadrant D5,119,393514,715

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146243
B0181592
C0151372
D0198782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7156761.062046%
B71562914.066518%
C7156680.950252%
D71563014.206260%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7916 7156 0 0 0.00% 0.00%
B 7916 7157 147 147 1.86% 2.05%
C 7916 7157 16 16 0.20% 0.22%
D 7916 7156 245 245 3.09% 3.42%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 4 2 44246 252.53 841 821 172.0
A 1 162 13454 73.46 841 821 172.0
A 11 29 7988 41.68 841 821 172.0
B 4 239 867159 5400.52 833 813 160.4
B 4 81 187639 1164.61 833 813 160.4
B 15 204 174432 1082.28 833 813 160.4
C 4 254 230659 1206.05 815 818 190.6
C 4 175 27291 138.91 815 818 190.6
C 14 234 14046 69.41 815 818 190.6
D 12 233 812979 4177.09 803 780 194.4
D 1 20 548465 2816.71 803 780 194.4
D 8 195 231577 1186.97 803 780 194.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter